Headphone



FIG. 1 is a perspective view of a headphone showing my new design, wherein the interior portion of an ear cup of the headphone is a mirror image of the interior portion of the other ear cup;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a left side elevational view thereof. 

The ornamental design for a headphone, as shown and described. 